| Project/Area Number |
11650031
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
表面界面物性
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| Research Institution | AOYAMA GAKUIN UNIVERSITY |
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Principal Investigator |
UOZUMI Kiyohiko Aoyama Gakuin University, College of Science and Engineering, Professor, 理工学部, 教授 (20011124)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1999: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | optical fiber / expansion wave / shear wave / SNOM / acoustic impedance |
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| Research Abstract |
A. Construction of conventional SNOM
A Quartz tuning fork for watch was used for the excitation and detection of the SNOM probe flexural vibration by isolating the electrodes for the fork as an oscillator. Resonance of the probe occurred at 40kHz and 130kHz which correspond to the fundamental and 2^<nd> resonance mode of the cantilever. The SNOM was operated at AC mode utilizing 2^<nd> resonance vibration. Operation as conventional SNOM was confirmed by obtaining topographic image of 2000 nm grid pattern of gold film on glass slide.
B. Ultrasonic pulse echoes by using shear deformation
In our scanning ultrasonic tip microscope (SUTM), expansion deformation piezoelectric-ceramics is cemented for the back end of W tip for sending and detecting ultrasonic pulses. As the tip deformation is normal to the surface, the surface is likely damaged by inelastic deformation. We used shear deformation piezoelectric ceramics instead of expansion one for the excitation of the tip vibration and succeeded in obtaining high quality ultrasonic pulse echoes for the first time. However, the phase detected ultrasonic signal changed not monotonously against the sample tip distance. We observed polished and gold deposited surface of composite material controlling the tip in STM mode and obtained ultrasonic image by using phase-detected signal. Interpretation of the image is not performed yet.
C. Development of actuators
Coarse movement of the probe to the surface is one of the most important mechanisms for the construction of SPM families. We developed a new mechanism extending our original idea of retracting legs fast enough for shear deformation at floating period.
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